How many copies did Rolling Ball : Sphere Guider sell?

198 to 322 copies, based on its 8 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Rolling Ball : Sphere Guider make?

Rolling Ball : Sphere Guider is free to play, so there is no copy-sales revenue to estimate.

How big is Rolling Ball : Sphere Guider?

Estimated owners: ≈ 198–322; from 8 reviews (8 user reviews); Thin evidence: 8 reviews. That range swings on one or two people, so read it as a hint, not a measurement.

A labeled estimate from the public review count (adjusted for release year), not exact sales. Owner data cross-checked with SteamSpy.

Does this actually work?

We left Rolling Ball : Sphere Guider out and predicted the genre from its 7 similar games. Every figure here, including Rolling Ball : Sphere Guider's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 17k–49k

best case 167k (SEUM: Speedrunners from Hell)

Games like Rolling Ball : Sphere Guider

The middle of these games

≈ 17k–49k copies

≈ $48k–$537k after Steam's cut

from ~442 reviews

Only the top fifth of 2019’s Steam releases earned about $34k gross, so plan for that or less.

2 of your 7 similar games are hits.

Best case: SEUM: Speedrunners from Hell at ≈ 127k–207k copies, ≈ $525k–$1.4M after Steam's cut.

What it took to get here

About half the games that made it here had over 267 reviews in their first month; the spread ran 9 to 815.

The genre you'd be entering

Your set: Your set clusters on 3D Platformer (6 of 7) and Platformer (5 of 7).
The winners: Winners here lead with 3D Platformer + Parkour, priced around $15.
The era: The games you compared span 2015 to 2025, and 1 of your 7 shipped in the last two years.

How these numbers were worked out

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

Copies come from each game's reviews times a sales-per-review rate that falls with release age, from about 31 for the most recent game here to about 61 for the oldest, then widened into a range; revenue rides on that estimate times price. Source: GameDiscoverCo (2020) and VG Insights (2021).

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Rolled Out! 2021	Est. copies ≈ 11k–18k SteamSpy 50k–100k	Est. revenue $60k–$162k after Steam's cut $110k–$249k before the cut	$19.99	442 reviews Very Positive	RacingPrecision Platformer
SEUM: Speedrunners from Hell 2016	Est. copies ≈ 127k–207k 6.9x vs typical SteamSpy 200k–500k	Est. revenue $525k–$1.4M after Steam's cut $954k–$2.2M before the cut	$14.99	3k reviews Very Positive	3D PlatformerParkour
The Adventures of Mr. Bobley 2015	Est. copies ≈ 19k–31k SteamSpy 50k–100k	Est. revenue $11k–$28k after Steam's cut $19k–$44k before the cut	$1.99	395 reviews Mixed	Puzzle-Platformer3D Platformer
Escape This 2016	Est. copies ≈ 30k–48k 1.6x vs typical SteamSpy 100k–200k	Est. revenue $41k–$109k after Steam's cut $74k–$168k before the cut	$4.99	713 reviews Mixed	Precision PlatformerPerma Death
Attempt[42] 2016	Est. copies ≈ 15k–25k SteamSpy 50k–100k	Est. revenue $21k–$57k after Steam's cut $39k–$88k before the cut	$4.99	371 reviews Mixed	3D PlatformerFirst-Person
Tomb Raider IV-VI Remastered 2025	Est. copies ≈ 45k–73k 4.1x vs typical SteamSpy 20k–50k	Est. revenue $368k–$989k after Steam's cut $669k–$1.5M before the cut	$29.99	2k reviews Very Positive	ActionAdventure
Gravulse Experimental 2020	Est. copies ≈ 6k–10k SteamSpy 20k–50k	Est. revenue Free	Free	240 reviews Mostly Positive	ActionFirst-Person